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Finding the Third Proportional to 21,654 and 47,276

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Solution

The third proportional to 21,654 and 47,276 is: 103,215.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,654 : 47,276 = 47,276 : x
  2. Step 2: Convert to fraction form
    21,654/47,276 = 47,276/x
  3. Step 3: Cross multiply
    21,654x = 47,276 × 47,276
  4. Step 4: Simplify right side
    21,654x = 2,235,020,176
  5. Step 5: Solve for x
    x = 2,235,020,176/21,654
  6. Step 6: Final answer
    x = 103,215.12

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.